10
3 BATTERY INSTALLATION
1. Open the battery cover and install two alkaline
AAA batteries in the battery compartment as
indicated. Check polarity and ensure the batteries
are correctly positioned;
2. Close the battery compartment cover.
• Replace the batteries when the replacement
indicator
appears in the display or when
the unit does not turn on when button ‘O/I’ is pressed;
• Use only alkaline AAA batteries, do not use rechargeable batteries;
• Use only same-age, same-type batteries together. Replace all batteries
simultaneously;
• If the device is to be unused for long time, take out the batteries and store in a
dry environment;
• Do not leave uncharged batteries in the device.